Matter Creation Cosmologies and Accelerated Expansion

Understand

Non-conservation of dark matter can lead to late-time cosmic acceleration.

• This mechanism is known as the matter creation theory and this replaces the need of dark energy and modified gravity theories.
• We consider a two-fluid system consisting of a cold dark matter and a second fluid with constant barotropic equation of state.
• We performed detailed investigations of such cosmologies using the powerful techniques of qualitative analysis of dynamical systems.